[llvm-branch-commits] [flang][runtime] Added custom visitor for IoStatementState variants. (PR #85179)

[Peter Klausler via llvm-branch-commits]

https://github.com/klausler requested changes to this pull request.

It would be better to have the types that are available on the device declare themselves so in their declarations via a member or (better) inherited trait.

The big variant union in `IoStatementState` could omit the host-only options when compiled for the device.

https://github.com/llvm/llvm-project/pull/85179